This work investigates the feasibility of carrying out stellar photon-correlation measurements using the 1.3 m Devasthal Fast Optical Telescope (DFOT) at the ARIES Devasthal Observatory near Nainital, India. The experiment will use Becker & Hickl hybrid photodetectors in a two-detector Hanbury Brown–Twiss configuration. This detector system was previously used for photon-correlation...
Modern single-photon detector arrays make it possible to rethink the readout concept for stellar intensity interferometry (SII). While ultrafast single-photon detectors targeting a single spectral line are already being explored by several groups, a key step forward is the use of detector arrays with multiple independently read out channels, enabling simultaneous photon detection of a large...
Intensity interferometry usually treats stars as static, yet Be-star disks rotate and binaries orbit. In Stanic et al. (2026) we showed that such motion breaks the time symmetry of the HBT correlation. On non-zero baselines, the correlation peak shifts away from zero lag, in a direction set by the sense of rotation.
Here we present a tabletop experiment to test this under controlled...
The poster will show our assembled spectrometer - spad array, alignment issues and details, spad array delay characterization, and very preliminary bench results. Unsolved issues will be listed as topics for discussion to encourage discussion and brainstorm solution space.
